.box{
    text-align: center;
    width: 500px;
    margin: 0 auto;
    border: 2px solid cadetblue;
}
.box input[type ="text"]{
    border:0;
    background: none;
    display: block;
    margin: 20px auto;
    text-align: center;
    border:2px solid #3498db;
    padding: 14px 10px;
    width: 200px;
    outline: none;
    border-radius: 24px;
    transition:0.25s;
}

